Bolt or nut tightening device



FIG. 1 is a front elevational view of a bolt or nut tightening device of the present design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a sectional view taken along line 7—7 of FIG. 1;

FIG. 8 is a sectional view taken along line 8—8 of FIG. 1;

FIG. 9 is a sectional view taken along line 9—9 of FIG. 1;

FIG. 10 is a first perspective view of the bolt or nut tightening device of the present design, as seen from diagonally left upward of a socket side;

FIG. 11 is a second perspective view thereof, as seen from diagonally right upward of the socket side;

FIG. 12 is a third perspective view thereof, as seen from diagonally left downward of the socket side;

FIG. 13 is a fourth perspective view thereof, as seen from diagonally right downward of the socket side;

FIG. 14 is a fifth perspective view thereof, as seen from diagonally left upward of the handle side;

FIG. 15 is a sixth perspective view thereof, as seen from diagonally right upward of the handle side;

FIG. 16 is a seventh perspective view thereof, as seen from diagonally left downward of the handle side; and,

FIG. 17 is an eighth perspective view thereof, as seen from diagonally right downward of the handle side.

The broken lines are for purposes of illustrating unclaimed structure. The broken lines and structure they depict form no part of the claimed design.

The name TONE displayed on the bolt or nut tightening device is a trademark owned by Maeda Metal Industries, Ltd. 

The ornamental design for a bolt or nut tightening device, substantially as shown and described. 